A M7.6 or 7.9 thrust quake Costa Rica. See the link. It might be reasonable to say that there could be some relation with the recent M 7 1/2 Ecuador quake, although they are rather far apart. Statistics of small numbers once again.

Someone made a really bad mistake and issued a tsunami advisory for the Carribean:
http://ptwc.weather.gov/ptwc/text.php?id=caribe.TSUCAX.2012.09.05.1447

They then cancelled it because the quake was in the Pacific.

http://ptwc.weather.gov/ptwc/text.php?id=caribe.TSUCAX.2012.09.05.1450

TSUNAMI MESSAGE NUMBER 2
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
1450 UTC WED SEP 05 2012

THIS MESSAGE APPLIES TO COUNTRIES WITHIN AND BORDERING THE
CARIBBEAN SEA...EXCEPT FOR PUERTO RICO AND THE VIRGIN ISLANDS.

... THE TSUNAMI WATCH IS CANCELLED ...

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND
ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME - 1442Z 05 SEP 2012
COORDINATES - 9.9 NORTH 85.5 WEST
LOCATION - OFF COAST OF COSTA RICA
MAGNITUDE - 7.9

EVALUATION

THE TSUNAMI WATCH FOR THE CARIBBEAN IS CANCELLED BECAUSE IT WAS
MEANT FOR THE PACIFIC AND WAS INADVERTANTLY SENT TO THE CARIBBEAN
BY MISTAKE. WE APOLOGIZE FOR ANY INCONVENIENCE THIS MAY HAVE
CAUSED.

Chris

• Costa Rica M7.6